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Old 03-02-2015, 09:05 AM   #21
OldNuc
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1998 SC2
Default Re: 1995 SC2 Timing Problem

Pulling a single plug wire is very hard on coil insulation and NOT recommended. Grounding a single wire is fine though.

The exhaust leak also causes a fouled up mixture which does not help.

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Old 03-02-2015, 07:24 PM   #22
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1995 SC2
Default Re: 1995 SC2 Timing Problem

OldNuc, the exhaust ends after the CAT and isnt the issue. its run like that many times without issue. and ive been getting the code since the exhaust was still stock. it came as a result of the cold air. going to check compression in a bit after i go get the gauge

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Old 03-02-2015, 07:30 PM   #23
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1995 SC2
Default Re: 1995 SC2 Timing Problem

just to check: from left to right the cylinder numbers go 4 1 2 3 correct?
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Last edited by zmarrott; 03-02-2015 at 07:37 PM..

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Old 03-02-2015, 07:47 PM   #24
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1995 SC2
Default Re: 1995 SC2 Timing Problem

Quote:
Originally Posted by zmarrott View Post
just to check: from left to right the cylinder numbers go 4 1 2 3 correct?
Yes 4 1 2 3 . Also is your CAI a true cold air intake? I was considering putting a warm air intake but definitely don't want to be popping SES lights..

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Old 03-02-2015, 08:27 PM   #25
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Default Re: 1995 SC2 Timing Problem

it was a true cold air, untill the original filter broke from being too close to the ground. so i took off the lower half of it and now it functions as more of a ram air than a cold air. i presume ram air is what you meant by warm air intake. ram air is a short pipe with usually a pod filter, but it pulling air from the engine bay instead of being routed outside the engine bay. the duct tape is cuz a hole got worn through it from the original battery bracket
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Old 03-02-2015, 08:31 PM   #26
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Default Re: 1995 SC2 Timing Problem

and to be honest the ses light is probably cuz of what i did with the intake temp sensor. its not actually in the intake, just dangling in the front corner of the car somewhere

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Old 03-02-2015, 08:36 PM   #27
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Default Re: 1995 SC2 Timing Problem

Are you asking about cylinder order, or firing order? Cylinder #1 is on the passenger-side, cylinder #4 is only the driver-side; 1-2-3-4 left-to-right standing in front of the car looking into the engine bay. I am not talking about firing order here, just actual cylinder locations.

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Old 03-02-2015, 08:39 PM   #28
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Default Re: 1995 SC2 Timing Problem

going off of the coil packs its 4 1 2 3. ive never seen an inline 4 actually be 1 2 3 4. firing order is probably something like 2 4 1 3. i know how they the basics of how they work, but i need to check when it comes to specific vehicles

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Old 03-02-2015, 08:44 PM   #29
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1998 SC2
Default Re: 1995 SC2 Timing Problem

As usual, this has become quite confused.

This is how you hook it all up.

Ignition wire routing as seen when looking at the engine and coils from the front, hood open, your left to right.

Engine
1-2-3-4

4-1-2-3
coil towers

Connect the matching numbers with a plug wire.


NOTE:
Your left when standing in the front of the car looking at the engine is your left, the car's right. The passenger side is always the right side when referencing the car.

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Old 03-02-2015, 09:36 PM   #30
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1995 SC2
Default Re: 1995 SC2 Timing Problem

LOL obviously your SES is on with the Intake sensor dangling. Alright now I'm not as worried lol.

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Old 03-02-2015, 09:47 PM   #31
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Default Re: 1995 SC2 Timing Problem

ok so now that cylinder location is cleared up, thank you oldnuc, if theres a burned valve would i hear anything if i place a stethescope to the top of the headders for each cylinder? havent gotten to the compression check cuz im waiting for my friend to help me with that

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Old 03-02-2015, 09:51 PM   #32
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1998 SC2
Default Re: 1995 SC2 Timing Problem

Pull the PCM B fuse to shut off fuel and spark and get someone to crank the engine while you listen at he tail pipe. If it is reasonably functional you will hear 1,2,3,4,1,2,3,4 repetitively with the same time spacing and if you have a bad exhaust valve 1 pulse in each group of 4 will be flat. Can not miss it. If it was the 3rd one you would hear 1,2,phht,4

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Old 03-02-2015, 10:09 PM   #33
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Default Re: 1995 SC2 Timing Problem

will definitely test that when my friend gets here. and pulling that fuse will be much easier than unplugging each plug and injector for the compression test

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Old 03-03-2015, 12:07 AM   #34
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Default Re: 1995 SC2 Timing Problem

so got the compression ressults. cylinders 1 and 2 are pushing about 30 psi and cylinders 3 and 4 are pushing 150-180. thats just confusing to me. i tested from left to right and after getting to cylinder 4 i went back to double check cylinders 1 and 2 and still read 30

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Old 03-03-2015, 09:00 AM   #35
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1998 SC2
Default Re: 1995 SC2 Timing Problem

Sounds like a blown head gasket. Need to pull the head and look. #1 and #2 are mechanically 180 degrees apart. Be sure to check both head and block for warpage as the engine has been run low on coolant.

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Old 03-03-2015, 02:05 PM   #36
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Default Re: 1995 SC2 Timing Problem

coolant is fine at the moment, and if it is leaking to the cylinders, i havent lost much. i havent driven it since saturday. ive only ran it low on coolant once about 3 months ago when the water pump was leaking, but after repairing that it ran fine.

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Old 03-03-2015, 02:28 PM   #37
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Default Re: 1995 SC2 Timing Problem

Quote:
Originally Posted by zmarrott View Post
so got the compression ressults. cylinders 1 and 2 are pushing about 30 psi and cylinders 3 and 4 are pushing 150-180. thats just confusing to me. i tested from left to right and after getting to cylinder 4 i went back to double check cylinders 1 and 2 and still read 30
I would do a leak down test on both cylinders to see where the leakage is happening, The gasket if blown between the two cylinder will show up.

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Old 03-05-2015, 04:26 PM   #38
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Default Re: 1995 SC2 Timing Problem

so instead of doing a leak down teat due to how expensive they are, i just pulled cylinder 1 and 2 spark plugs and disconnected their fuel injectors on the hunch that my head gasket break was between the two cylinders and after accidentally leaving all electrical systems on for a day and getting the battery charged at autozone for 2 1/2 hours and a 20 minute jump start, it ran quite well considering the condition the engine is in. cylinders 1 and 2 are bypassed entirely with the exception of their weight. wouldnt idle below 1800 rpm, but kinda cant expect much better on half an engine. went for a drive and no overheat issue at all just minimal power. so thats the status of the car now. so does anyone know of or can find a forum on replacing the head gasket on the DOHC engine? im at work currently and dont have time to search the site yet

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Old 03-05-2015, 05:49 PM   #39
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Default Re: 1995 SC2 Timing Problem

How about a link to a head replacement which includes the gasket?
Head replacement and chain remove-replace
http://www.saturnfans.com/forums/sho...d.php?t=168496

Pictures of the entire overhaul process.
DOHC (1995)
https://picasaweb.google.com/1159762...L6UoammvrKEsAE

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